.....that if you can afford to do it, then do whatever you want.
Over the years I've spent plenty on drinking, been out too late, had hangovers/sickies due to being out too late or having too much fun.
So the favourite area has shifted slightly? So what? Let them stew in their own piss and sooner or later they'll either grow out of it (or bored of it) or they'll just carry on doing what they want to do.
Provided it's in the privacy of their own homes and they aren't getting internet connectivity on my tax money who really gives a crap....?